Bump opencv from 0.88.8 to 0.90.0 in /backend

[dependabot]

Bumps opencv from 0.88.8 to 0.90.0.

Changelog

Sourced from opencv's changelog.

• 0.90.0

  • Automatically generate default constructors for classes where posssible.
  • Backwards-incompatible changes:
    • LayerParams::default() can no longer fail, so it returns Self without Result.
    • GpuMat::default() is now GpuMat::new_def().
    • Automatically named functions (*_1) in features2d module were given proper names.
    • Generate bindings to float16_t and hfloat types to fix the build with the current OpenCV master.

• 0.89.0

  • All functions accepting classes now take impl ClassTrait instead of Class directly. This allows passing other objects that implement the same trait. This change should be backwards compatible.
  • Some functions, notably Mat::roi(), now return a BoxedRef<Mat> wrapper instead of seemingly independent Mat. This fixes old soundness hole because the returned Mat was actually a view into the source Mat and you could easily end up with 2 mutable references to the same memory. An additional *_mut() is generated for each of such function to return a mutable BoxedRefMut<Mat>. To get 2 mutable references to the same Mat for the non-intersecting regions use the new Mat::roi_2_mut() function.
  • Slice detection improved, slice arguments in more functions are now generated automatically.
  • Some slices in function arguments are now references to arrays of particular size. To migrate call .try_into() to convert the slice to the array.
  • The error message for the unspecified error (should never actually be visible) is changed to "Unspecified error, neither from OpenCV nor from std".
  • Function signature changes:
    • A group of functions for Mat, UMat, GpuMat and GpuMatND have been given proper names (rowscols, roi, ranges, col_bounds). Consequently, e.g. roi function can now be called on the Mat instance (mat.roi()) instead of requiring a fully qualified call (Mat::roi(&mat)).
    • MatConstIterator::pos_to() is now unsafe and takes a pointer instead of a reference.

• 0.88.9

  • Fix building on macOS with vcpkg (fixes twistedfall/opencv-rust#549).

Commits

• 7b97b9f chore: Release
• 955d901 Update docs and changelog
• cd82fa2 Generate more default constructors
• 5cc2fff Export half-float types (fixes current OpenCV master)
• f2bcd0c Update automatic names in features2d module
• 801802b Cleanup
• 37e1260 Cargo fmt
• c3ad755 More robust into_result() when error_msg is null
• b097ac4 Update docs and error messages
• 985af46 chore: Release
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[dependabot]

Superseded by #434.